Version Bump for 3.6.0

./scripts/bump_version.sh --version 3.6.0 --so-crypto 16 --so-x509 7  --so-tls 21

Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
diff --git a/doxygen/input/doc_mainpage.h b/doxygen/input/doc_mainpage.h
index 17762d7..3eb5f75 100644
--- a/doxygen/input/doc_mainpage.h
+++ b/doxygen/input/doc_mainpage.h
@@ -10,7 +10,7 @@
  */
 
 /**
- * @mainpage Mbed TLS v3.5.2 API Documentation
+ * @mainpage Mbed TLS v3.6.0 API Documentation
  *
  * This documentation describes the internal structure of Mbed TLS.  It was
  * automatically generated from specially formatted comment blocks in